\input $HOME/tex_doc/format/myplain.tex \magnification 1200 \let \exo \Exo \withoutcorrigbody \date {20 septembre 2002} \classe {S$_2$ mai} \duree {1h} \overfullrule 0pt \titre {\twentybf Devoir surveillé n\raise 5pt \hbox {\tenbf o} 1} \def \datapath{% $HOME/tex_doc/lycee/database/btsmai/analyse/equadiff/} \bareme {10} \input \datapath equ1_029.tex \bareme {5} \input \datapath equ2_010.tex \def \datapath{% $HOME/tex_doc/lycee/database/btsmai/stats/} \bareme {5} \input \datapath reg_004.tex \bye